Go Back   DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Sign in using an external account
Register Forgot Password?


2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

loss is oil pressure when engine is up to temp

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-28-2013, 09:14 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default loss is oil pressure when engine is up to temp

I changed my oil and I'm having a problem with loss of oil pressure when the engine gets up to temp and at a idle. I usually run 10w 40 during the summer napa brand but napa only had 10w 30 so I went with it. I changed the oil filter again thinking that may be the problem but nothing changed. My oil pressure is fine when the motor is idling when I first start it. It will run Around 40 psi. But once it gets up to temp and I stop at a stop light it drops to 0psI. So I have to bump the rpms up to 700rpm then it climbs back to 40psi. Any ideas out there?
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #2  
Old 07-28-2013, 09:17 AM
HeyYou's Avatar
HeyYou HeyYou is offline
Section Moderator
Dodge Forum Moderator
 
Join Date: Apr 2010
Vehicle: 1996 Dodge Ram 2500
Location: Adrian, MI
Posts: 34,287
Default

Replace the pressure sending unit.
__________________
1996 Ram 2500 5.9 EC/SB Gas, Auto, 4x4, Hughes plenum plate, Kegger mod, double roller timing set, rest is stock. For now.....
Reply With Quote
  #3  
Old 07-28-2013, 11:33 AM
Shredding Rubber's Avatar
Shredding Rubber Shredding Rubber is offline
Registered User
 
Join Date: Jul 2013
Posts: 4
Default

Sending unit. Or go get a couple quarts 20w-50 to thicken it a bit. Do not use Lucas.
Reply With Quote
  #4  
Old 07-28-2013, 01:21 PM
Arde Arde is offline
All Star
 
Join Date: Jul 2011
Vehicle: '95 Ram 1500 360 4x4
Location: Dayton, TX.
Posts: 892
Default

Sending unit, and if that doesn't help, get a mechanical oil pressure gauge so you know what your oil pressure really is. Dodge oil pressure gauges don't work worth a darn.
If it's still low, time to drop the pan and find out why.
Reply With Quote
  #5  
Old 12-17-2013, 12:18 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

Looks like i'm dropping my pan. My oil gauge has been getting worse and I started to here valves starving for oil. I'm going to drop the pan and clean crap up. stick the pan back in and check my oil pressure with a gauge. I'm also going to take my vlave covers off to see the amount of oil flowing . I think at 206,000 my pump might of kicked the bucket.
Also what kind of crap am I going to run into by dropping the pan on a 2wd? Also seeing that the top end was starving for oil what should I be looking for????? Strange colors on springs???? The motor doesn't tick at idle or all the time when i'm getting on it. The vlaves taped a little when I got on it tonight. but I backed right off So I don't I did any damage.
Thanks
Adam

Quote:
Originally Posted by Arde View Post
Sending unit, and if that doesn't help, get a mechanical oil pressure gauge so you know what your oil pressure really is. Dodge oil pressure gauges don't work worth a darn.
If it's still low, time to drop the pan and find out why.
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #6  
Old 12-17-2013, 07:48 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

What kinda gauge do I use to check the oil pressure? I doubt I would use a vacuum/presure gauge. Where do I plump into the system??? Part numbers would be great
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #7  
Old 12-17-2013, 01:38 PM
merc225hp's Avatar
merc225hp merc225hp is offline
Champion
 
Join Date: Oct 2009
Vehicle: Big Black Ram
Location: N/A
Posts: 4,663
Default

They sell mech oil test gauges but I would look for a mech oil psi gauge that can be installed permanently in the truck. $30 and up for a new one. You have to remove the oil psi sender and install the mech gauge plumbing from there to the cab. Get an new oil pump and pickup tube and install them as well.
__________________

Built, 5.9, Clocked/indexed Np241, Dana 60 diff swap. Built by me not bought!
Reply With Quote
  #8  
Old 12-18-2013, 07:33 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

Well I tore the valve covers off started the motor no oil coming up at all. So I dropped the pan and tore the pump out. cleaned the pan up low sludge. But the dumb mechanic that I had replace my plenum gasket didn't flush the motor when he was done so I had all kinds of intake gasket crap sucked up in the screen. I looked the whole motor over and didn't seen any funky colors or scratches/ wear. The cam, pistons, rods, etc all had a good amount of oil on them. (kind of strange because I thought the cam was lubed by oil pouring from the valve train back to the pan.) I am going to install a high volume pump seeing that the motor has 206,000 on it. Wha'ts the difference between napa's sealed power pumps http://www.napaonline.com/Catalog/Ca...66V_0191858192
and Melling High-Volume Oil Pump? http://shop.advanceautoparts.com/web...hTerm=oil+pump other then price.
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #9  
Old 12-18-2013, 08:58 AM
Ham Bone's Avatar
Ham Bone Ham Bone is offline
Champion
 
Join Date: Aug 2011
Vehicle: 01 1500(and a half?) 4x4
Location: Blacksburg, VA
Posts: 3,452
Mr Lambman
Default

There have been some problems with those mellings high volume pumps. Just out a stock replacement on. Magnum bottom ends are typically pretty stout.
Reply With Quote
  #10  
Old 12-18-2013, 09:35 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

what kind of problems?
Quote:
Originally Posted by Ham Bone View Post
There have been some problems with those mellings high volume pumps. Just out a stock replacement on. Magnum bottom ends are typically pretty stout.
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #11  
Old 12-18-2013, 09:43 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

I've been searching around on the net and I guess I need a hardened shaft to run the HV pump. I may stick with stock like pump
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #12  
Old 12-18-2013, 11:32 AM
HeyYou's Avatar
HeyYou HeyYou is offline
Section Moderator
Dodge Forum Moderator
 
Join Date: Apr 2010
Vehicle: 1996 Dodge Ram 2500
Location: Adrian, MI
Posts: 34,287
Default

I have been running a high volume pump in mine for two years now, with the stock drive.
__________________
1996 Ram 2500 5.9 EC/SB Gas, Auto, 4x4, Hughes plenum plate, Kegger mod, double roller timing set, rest is stock. For now.....
Reply With Quote
  #13  
Old 12-19-2013, 02:59 PM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

Go the truck all back together.....I had to use a impact to get the nut of the main wire to the starter so I killed the starter.......I also broke the clip on the small wire to the starter do I have to buy a whole wiring harness or can I just buy a clip end?????
Thanks
Adam
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #14  
Old 12-19-2013, 03:00 PM
HeyYou's Avatar
HeyYou HeyYou is offline
Section Moderator
Dodge Forum Moderator
 
Join Date: Apr 2010
Vehicle: 1996 Dodge Ram 2500
Location: Adrian, MI
Posts: 34,287
Default

Just pick up a couple of the crimp-on terminal ends. Quick and easy.
__________________
1996 Ram 2500 5.9 EC/SB Gas, Auto, 4x4, Hughes plenum plate, Kegger mod, double roller timing set, rest is stock. For now.....
Reply With Quote
  #15  
Old 12-20-2013, 04:03 AM
army_greywolf army_greywolf is offline
Professional
 
Join Date: Jun 2007
Vehicle: 2000 Ram 1500 4x4OR
Location: Fond Du Lac, WI
Posts: 235
Default

Hey I want to add something, but it may be too late now...I wish you would have pulled the cap from the rear main AND the last connecting rod...drop a plastigage strip on both and check the wear... If it would have been too far out, you could have then hit it with a caliper or micrometer to get an idea if you can simply change out the bearings and put it back together...

But, as far as oil pressure, the oil gallery system pressurizes the mains(crank) above everything else. The oil flows to the cam bearings, then the rest of the oil is sent to the lifters, which if flow is low, nothing will make it's way up the pushrods and onto the rockers.

Another reason I want you to look at bearings. I think there may now be embedded material on the bearings from when your mechanic did the intake. In fact I find that to be a high probability. On a Magnum you can get to every bearing in the bottom end without pulling the crank. That may be frowned upon...but when bearings are 60 bucks why would you leave contaminated stuff in the engine. If you do it, when your done, pull the harmonic balancer and replace the cover seal because the weight of the crank resting on it makes it leak.

Of course...if the truck has bad rings...hell with it.
__________________
2000 Ram 1500 QC4x4OR 7" skyjacker 37" BFGs
Reply With Quote
  #16  
Old 12-20-2013, 07:44 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

Too late the motor is all back together. I'm slapping the starter in and starting the motor. If I don't get good oil pressure right off the bat I will look into it further.....I thought about checking the bearings on the crank and rods but didn't want to screw it up. I poured oil down both valve covers.
Thanks
Adam




Quote:
Originally Posted by army_greywolf View Post
Hey I want to add something, but it may be too late now...I wish you would have pulled the cap from the rear main AND the last connecting rod...drop a plastigage strip on both and check the wear... If it would have been too far out, you could have then hit it with a caliper or micrometer to get an idea if you can simply change out the bearings and put it back together...

But, as far as oil pressure, the oil gallery system pressurizes the mains(crank) above everything else. The oil flows to the cam bearings, then the rest of the oil is sent to the lifters, which if flow is low, nothing will make it's way up the pushrods and onto the rockers.

Another reason I want you to look at bearings. I think there may now be embedded material on the bearings from when your mechanic did the intake. In fact I find that to be a high probability. On a Magnum you can get to every bearing in the bottom end without pulling the crank. That may be frowned upon...but when bearings are 60 bucks why would you leave contaminated stuff in the engine. If you do it, when your done, pull the harmonic balancer and replace the cover seal because the weight of the crank resting on it makes it leak.

Of course...if the truck has bad rings...hell with it.
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #17  
Old 12-20-2013, 02:08 PM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

truck is all put back together fixed a few other things while I was working on it. started the truck and was showing around 50ish at the gauge good amount of oil coming up through the push rods. at temp the oil pressure is around 30-35 ish. took a stethoscope a listen to the crank and a few other places no strange noised or knocks. I think I lucked out on this one. I guess it was a warning for not looking into problems when they first happen.
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
  #18  
Old 12-20-2013, 10:56 PM
HeyYou's Avatar
HeyYou HeyYou is offline
Section Moderator
Dodge Forum Moderator
 
Join Date: Apr 2010
Vehicle: 1996 Dodge Ram 2500
Location: Adrian, MI
Posts: 34,287
Default

Awesome, it LIVES!

Drive it, and enjoy it.
__________________
1996 Ram 2500 5.9 EC/SB Gas, Auto, 4x4, Hughes plenum plate, Kegger mod, double roller timing set, rest is stock. For now.....
Reply With Quote
  #19  
Old 12-21-2013, 02:51 AM
army_greywolf army_greywolf is offline
Professional
 
Join Date: Jun 2007
Vehicle: 2000 Ram 1500 4x4OR
Location: Fond Du Lac, WI
Posts: 235
Default

Hell yea man, dodge-d a bullet there.
__________________
2000 Ram 1500 QC4x4OR 7" skyjacker 37" BFGs
Reply With Quote
  #20  
Old 12-21-2013, 06:21 AM
utahjd1 utahjd1 is offline
Rookie
 
Join Date: Oct 2009
Posts: 90
Default

I have one question about bearings........I know all the pushrod bearing can be changed with the motor in the truck.....but what about the crank. All the bottom bearings can be changed but what about the top ones????? Just something I've been thinking about.....Thank god I don't have to do it.
__________________
2001 318 Automatic 4x2 Club cab Short bed.
Reply With Quote
Old 12-21-2013, 06:21 AM
 
 
 
Reply




Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 04:12 AM.

Internet Brands, Inc.


Contact Details & Emails